Pretty freakin awesome.
Your presence on this day is the ultimate gift and more than we could hope or ask for. However if you feel the need to give in addition we are all about experiences rather than tangible gift items. (we also live in a rather small apartment with limited space) We are saving for a honeymoon to Croatia and a sprinter van. If you just can't hold back you can donate to a cash fund for either of those through the registry.
Yes, however it is winter and in an old barn so dress appropriately and bring layers. We hope to keep a temperature of 60 Fahrenheit in the building but there may be some hot spots and cool spots.
Our ultimate gift is you and your family celebrating with us. However with that being said we understand all the planning it may take to get all the little ones ready to attend a winter wedding, plus staying up past normal bed times so if it feels more stressful or more of a hassle on the parents do what you feel is best. Know that we love child mayhem (no joke) and want everyone to join.